Geotextile Double Sided Butyl Jointing Tape

Geotextile Double Sided Butyl Jointing Tape is a specialist sealing tape used to create watertight joints between overlapping impermeable membranes. It is designed for use with damp proof membranes, gas barriers, geomembranes and plastic sheeting where water or gas containment is required.

The tape is commonly used in attenuation tanks, infiltration trenches, soakaway systems, radon and methane barrier installations and other containment applications. When compressed between membrane layers, the butyl compound flows slightly to fill surface irregularities, forming a continuous seal along the joint.

Unlike single sided cloth tapes used with permeable geotextiles, this product is intended specifically for impermeable systems. It improves installation quality by maintaining continuity across laps, penetrations and junctions, helping ensure the membrane performs as intended once buried.

Installation is straightforward. The tape is applied between overlapping membrane sheets with the release liner in place. Once aligned, the liner is removed and the membranes are pressed together to activate the seal. Mechanical fixing or weighting may still be required depending on membrane type and application.

Available in different widths and roll lengths, the tape can be selected based on overlap size, membrane thickness and site conditions. Wider tapes are typically used where higher tolerance, movement or sealing confidence is required.

• Designed for sealing impermeable membrane overlaps
• Creates a watertight joint under compression
• Suitable for damp proof membranes and gas barriers
• Commonly used in attenuation and infiltration systems
• Clean application with no curing time required
• Available in multiple tape sizes

Butyl based sealing tape formulated to remain flexible and provide long term adhesion and sealing when compressed between impermeable membrane layers.

Tape type: Double sided butyl
Available sizes: 100 mm x 15m and 50mm x 22m
Colour: Black
Use: Impermeable membranes and plastic sheeting